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Curriculum Outcomes
Measurement: Develop spatial sense through direct and indirect measurement.
1. Demonstrate an understanding of the Système International (SI) by:
4. Solve problems that involve SI and imperial area measurements of regular, composite and irregular 2-D shapes and 3-D objects, including decimal and fractional measurements, and verify the solutions. [ME, PS, R, V]
Measurement: Develop spatial sense through direct and indirect measurement.
1. Demonstrate an understanding of the Système International (SI) by:
- describing the relationships of the units for length, area, volume, capacity, mass and temperature
- applying strategies to convert SI units to imperial units. [C, CN, ME, V]
- describing the relationships of the units for length, area, volume, capacity, mass and temperature
- comparing the American and British imperial units for capacity
- applying strategies to convert imperial units to SI units. [C, CN, ME, V]
4. Solve problems that involve SI and imperial area measurements of regular, composite and irregular 2-D shapes and 3-D objects, including decimal and fractional measurements, and verify the solutions. [ME, PS, R, V]
Things You Need to Know
- There are two main units that we use to measure temperature:
- Celsius is the SI (metric) unit. It is used in most countries around the world, including Canada.
- Fahrenheit is the imperial unit. It is used in only a few countries, particularly the USA.
- The formula to change Fahrenheit to Celsius is: C = 5/9 x (F - 32)
- Remember: BEDMAS. Do the brackets first.
- The formula to change Celsius to Fahrenheit is: F = 9/5 x C + 32
- Mass and weight are actually separate things. Mass refers to the amount of matter in an object. Weight is the force an object has due to gravity.
- So, if you went to the moon, your weight would be different, but your mass would be the same.
- Imperial mass units include ounces (oz), pounds (lb), and tons (T or tn).
- SI (metric) mass units include milligrams (mg), grams (g), kilograms (kg), and metric tonnes (t).
- Another name for a metric tonne is "megagram" (Mg), since 1 t = 1000 kg = 1000000 g. This is techinically its proper name, but metric tonne (or just "tonne") is usually used.
- You can convert between these using the conversion factors provided on your formula sheet.
- Volume in cubic units and fluid volume in units like liters are related.
- 1 cubic cm = 1 mL
- 1000 cubic cm = 1000 mL = 1 L
- 1 cubic cm = 1 mL
- In agriculture, a unit of measurement known as a "bushel" (bu) is often used. A bushel is basically just a large basket, equivalent to about 35.2 liters.
- Bushels of different types of products weigh different amounts. 1 bushel of apples weighs more than 1 bushel of cotton, for example.
- Bushel weights are usually given as bushels/tonnes. This number is known as the product's conversion factor.
- Barley's conversion factor is 45.9 bu/t (bushels per tonne). So 45.9 bushels of barley weighs 1 tonne.
- Barley's conversion factor is 45.9 bu/t (bushels per tonne). So 45.9 bushels of barley weighs 1 tonne.
- The higher the conversion factor, the less each bushel of the product weighs.
- Apples: 41.66 bu/t
- Cotton: 62.50 bu/t
- So, 41.66 bushels of apples weighs one tonne, but 62.50 bushels of cotton weighs one tonne. This means each bushel of apples must weigh more than each bushel of cotton.
- Apples: 41.66 bu/t
Interactive Activities
Sample Problems
Class Notes